// Encyclopedia

(Data Link SWitching) An IBM method for integrating and forwarding SNA and LAN traffic over wide area networks (WANs) by encapsulating the data in TCP/IP packets. DLSw supports the SDLC (SNA) and LLC2 (Token Ring) data link protocols and is generally employed in routers. Multiprotocol over frame relay (MPOFR) is a later technology designed to move SNA and LAN traffic over frame relay. See MPOFR.